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advice about heat from Yale.

didn't know this.

"Be careful using fans in extremely hot weather: If the temperature is approaching

100 F, particularly if the air is dry,

running a fan can be more dangerous for your body."

@holon42

They don't exactly explain in what way fans can be dangerous...

@Tacitus_Kilgore @tgraph52 @holon42

I've had friends from cooler states say that air conditioning wasn't necessary in a car. That you can just roll down the window.

I pointed out that in Texas, that was like being in a convection oven.

@tyghebright

I turned on the car AC a couple days ago for the first time in a long time and nothing...

Here in SW New Mexico it can be an issue.

@tyghebright

i had a car without AC. rolling down the window, 🤧🤧😬

when it's that hot, it's just a breezy oven.

@Tacitus_Kilgore @tgraph52 @holon42

I think they're oversimplifying. If there is no air moving and the humidity is high, the air layer near your body will be hotter than ambient temperature. A little air movement will reduce your temperature. If it's very dry humidity, it will dehydrate you more than it cools you (since you're evaporating fast anyway) and could make you sicker.

@Tacitus_Kilgore @tgraph52 @holon42

The temperature outside makes no difference if windows are closed, which is the problem when elderly people are fearful of crime and cook inside their homes.

@EileenKCarpenter @Tacitus_Kilgore @tgraph52 @holon42 Used them all the time to measure humidity within hospital darkrooms. Too humid? Film dispensers and automated cassette systems would stick. Too dry? Static electricity artifacts on radiographs which actually look really cool; like lightning bolts.

@tgraph52

"fans make it even more difficult for the body to lose heat by sweating."

again, left hanging as to WHY damnit🫠

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